研究人员随后测试了猴子如何组合或添加这些符号来获得奖励。

The researchers then tested how the monkeys combined—or added the symbols to get the reward.

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可以看到现在已经将美元符号添加到价格、小计和总和中。

You see that a dollar symbol is now added to the price, subtotal, and total.

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混合攻击将数字和符号添加到文件名以成功破解密码。

A hybrid attack will add numbers or symbols to the filename to successfully crack a password.

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How do I do it? By putting in signs which are not other signs.

那怎么办呢？这就需要添加特殊的符号。

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